examples/ipv4_multicast: support double vlan stripping and insertion

The outer vlan should be copied from source packet buffer to
support double vlan stripping and insertion, as double vlan can be
stripped or inserted by some of NIC hardware.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>

diff --git a/examples/ipv4_multicast/main.c b/examples/ipv4_multicast/main.c
index 2a2b915f0f0109b1fb1a411efa51f2dd21a7feea..d4253c0ec2a59fd9a8abffee464886a9d064ae65 100644 (file)
--- a/examples/ipv4_multicast/main.c
+++ b/examples/ipv4_multicast/main.c
@@ -298,6 +298,7 @@ mcast_out_pkt(struct rte_mbuf *pkt, int use_clone)
        /* copy metadata from source packet*/
        hdr->port = pkt->port;
        hdr->vlan_tci = pkt->vlan_tci;
+       hdr->vlan_tci_outer = pkt->vlan_tci_outer;
        hdr->tx_offload = pkt->tx_offload;
        hdr->hash = pkt->hash;